Fortiori Design LLC
Registered: 1355349061 Posts: 1,530
It is important to understand, that we use MOXY in any sport and activity.
So very often, when we are talking endurance sports we get pushed into the idea that everybody is a cyclist or a runner. This is not as a negative statement but as a reality as this sports have some very big groups who are attracted to it. Now I like to use cycling as one extreme situation from a positive point of view. Cycling is one of the sport with a huge advantage in looking at performance. We have affordable; wattage systems this days and therefor have in cycling a sport, where we have a very objective tool to look at performance changes over time. So the idea we use in cycling for zoning , despite that it is a physical number ( wattage) and not a physiological feedback make for me most sense from any zoning ideas. In cycling FTP assessment over a 60 min is a very great tool to get an objective feedback on performance. If we now pair this idea with MOXY or NIRS in general we have the huge advantage to use wattage as a guide and physiological feedback like MOXY as a daily adjustment on the normally calculated zoning's. . What does that mean. When we compared Portamon and FTP many years back we had a clear idea and looked for confirmation. If a person can sustain any activity over 45 + minute so FTP 60 , than he has to be somehow in a balanced situation in energy delivery and utilization. So if this is the case , than NIRS information or in MOXY SmO2 or HHb or O2 Hb have to be more or less stable ( flat ) . If you go above the FTP power you will see a drop in SmO2 an the drop depends on how much above you are. If you use Portamon or any other NIRS and you use HHb to guide you will see an increase in HHb if you above and a drop if you are below FTP load. If you use O2 Hb than the trend is like with SmO2. Now this is when we use SmO2 alone. If we add tHb trend than we have some earlier " warning signals", that we may come to an end with a stable SmO2 and we may see a drift in SmO2 downwards, despite the fact , that we where pretty good over a longer time. Below a 60 min FTP load and if you look at SmO2 we have the expected reaction of a initial drop due to muscle contraction followed by an increase once we had a perfect CO an than an ongoing drop indicating a reaction in blood flow in his leg muscle , but balanced enough to maintain the SmO2 level.. BUT: as usual a but. Remember that a stable same % SmO2 does not always mean, that we are in a O2 balance . If we actually have a lower tHb than at the start or in the mid section we may in fact actually be slightly in a drift of a lower oxygenation despite a stable SmO2 %. That's' where we need tHb. Why ? Here the example courtesy of the cycling center from South Africa. ,Now what can we get out of the cycling world.? For any other sport, where we do not have wattage or where performance is hard to get, like cross country skiing and running in the field and so on, we can use now with a good feeling MOXY. A stable SmO2 will give us a feedback on intensity and we name it STEI or what ever you like to name it. meaning , that delivery of O2 and utilization are nicely balanced. ( we may already see a slightly reaction of compensator. In the picture the drop in tHb will create a potential increase in HR : Why ? . The advantage now is, that we have in sports , where we do not have a great guidance over wattage the ability to be guided physiologically with MOXY. On the other side we may have to open up our minds in cycling to accept, that wattage is a great guidance, but if we like to stay in a specific target intensity like a stable SmO2 ,we may have to adjust the wattage to maintain a stable SmO2 otherwise we " drift or may drift out of this target intensity as we try to hang on a fixed physical number called wattage. . Hope this make s some sense.